If you own an authentic HEX-V2 or HEX-NET and see this error, it is usually a software glitch or an incomplete registration.
Temporary glitches cause 30% of license errors. Vcds License Revoked Fix
John had been using VCDS (VAG-COM Diagnostic System) for years to diagnose and repair his own Volkswagen Golf. He had purchased a license from a reputable vendor, and everything had been working smoothly. However, one day, when he tried to connect to his car's ECU, he was shocked to see a message indicating that his license had been revoked. If you own an authentic HEX-V2 or HEX-NET